If you could add a new theme to Disney's Magic Kingdom (or Disneyland), what would it be? I'm not talking about a land that exist in another Magic Kingdom park (i.e Tokyo, Paris) but something entirely new.

While the other parks in the resorts are getting swanky new editions (Cars Lands, Avatar, etc.), what lands could the flagship parks add that would still allow it to feel like a Magic Kingdom Park

Like I just said in the Middle Earth thread, Lord of the Rings would be a great replacement for Tom Sawyer. It fits the magic theme of MK greatly. They could use the old Fire Mountain plans they had and turn it into Mount Doom.